mirror of
https://github.com/DCC-EX/CommandStation-EX.git
synced 2024-11-22 23:56:13 +01:00
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
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* © 2024 Chris Harlow
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* All rights reserved.
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*
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* This file is part of DCC-EX
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* It is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef Railcom_h
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#define Railcom_h
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#include "Arduino.h"
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typedef void (*ACK_CALLBACK)(int16_t result);
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class Railcom {
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public:
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Railcom(uint16_t vpin);
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/* returns -1: Call again next packet
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0: No loco on track
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>0: loco id
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*/
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void process(uint8_t * inbound,uint8_t length);
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static void anticipate(uint16_t loco, uint16_t cv, ACK_CALLBACK callback) {
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expectLoco=loco;
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expectCV=cv;
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expectWait=millis(); // start of timeout
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expectCallback=callback;
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};
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private:
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static const unsigned long POM_READ_TIMEOUT=500; // as per spec
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static uint16_t expectCV,expectLoco;
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static unsigned long expectWait;
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static ACK_CALLBACK expectCallback;
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void noData();
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uint16_t vpin;
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uint8_t holdoverHigh,holdoverLow;
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bool haveHigh,haveLow;
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uint8_t packetsWithNoData;
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uint16_t lastChannel1Loco;
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static const byte MAX_WAIT_FOR_GLITCH=20; // number of dead or empty packets before assuming loco=0
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};
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#endif |